Title :
Non destructive evaluation using the SQUID with integrated gradiometer
Author :
Nakane, H. ; Adachi, H. ; Walker, M. ; Klein, U.
Author_Institution :
Dept. of Electr. & Electron. Eng., Muroran Inst. of Technol., Hokkaido, Japan
Abstract :
An eddy current nondestructive evaluation system using a low-temperature SQUID magnetic sensor was operated in an unshielded environment. The sensor consists of a niobium dc superconducting quantum interference device (SQUID) and a first-order gradiometer pick up coil on the same substrate. We have used the integrated SQUID gradiometer in an unshielded environment to make eddy current nondestructive evaluation measurement on a multi-layer aluminum structure
Keywords :
SQUID magnetometers; eddy current testing; niobium; 100 kHz; Al; Al multilayer structure; Nb; eddy current nondestructive evaluation; first-order gradiometer pick up coil; integrated gradiometer; low-temperature SQUID magnetic sensor; unshielded environment; Aluminum; Eddy currents; Interference; Magnetic sensors; Magnetosphere; Niobium; Physics; SQUIDs; Superconducting coils; Transducers;
Conference_Titel :
Solid State Sensors and Actuators, 1997. TRANSDUCERS '97 Chicago., 1997 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-3829-4
DOI :
10.1109/SENSOR.1997.613671
